Site Reliability Engineer – HP NonStop / Tandem / Connex / Payment Processing

Job Title: Site Reliability Engineer (SRE) – HP NonStop / Tandem
Experience: 10+ Years
Technology: HP NonStop, Tandem, Connex, TACL, Guardian, Falcon, Payment Processing
Job Type: Contract

Job Description

We are seeking an experienced Site Reliability Engineer / HP NonStop (Tandem) Engineer with strong hands-on experience in the Connex payment processing environment.

The ideal candidate will have extensive experience supporting HP NonStop systems, Connex applications, TACL scripting, database automation, batch processing, settlement operations, cardholder data loads, and production migration activities.

This role requires a hands-on technical professional who can prepare, execute, monitor, and validate daily operational activities supporting Connex migrations, payment processing, settlement readiness, and downstream data availability.

Candidates with experience in Connex, BASE24, Falcon interfaces, Processor Interface (PI), ATM/POS processing, and banking or financial payment systems are strongly preferred.

Required Technical Skills

• 10+ years of experience in IT, with strong hands-on experience in HP NonStop / Tandem environments.

• Extensive experience with Connex payment processing applications and operational support.

• Strong knowledge of HP NonStop Guardian and OSS environments.

• Hands-on experience with TACL (Tandem Advanced Command Language) scripting, macros, and automation.

• Experience creating and maintaining TACL scripts, batch TACLs, balance TACLs, and obey files.

• Experience with database automation scripts and recurring production-processing activities.

• Strong knowledge of Connex batch processing, balance processing, settlement processing, and migration readiness.

• Experience building and executing obey files for APPRINTs, ELASTIC, and Falcon loads.

• Experience running initial balance files and validating settlement processing results.

• Experience managing cardholder data loads and validating data processing completion.

• Experience monitoring Processor Interface (PI) link queue files and downstream processing.

• Experience with Falcon interfaces, Falcon loads, and payment-switch integration.

• Knowledge of ATM, POS, debit card, credit card, acquiring, issuing, and transaction processing.

• Experience with production support, operational monitoring, incident management, and migration validation.

Key Responsibilities

• Prepare, execute, and validate daily migration-related operational activities within the Connex environment on HP NonStop.

• Maintain and enhance database automation scripts for repeatable migration and production-processing activities.

• Configure and execute batch and balance TACLs.

• Build and maintain obey files for APPRINTs, ELASTIC, and Falcon loads.

• Execute initial balance files and validate results for settlement readiness.

• Manage cardholder data loads and verify successful processing.

• Monitor PI link queue files and identify processing delays or failures.

• Perform operational validation of batch execution, database activities, data loads, and downstream availability.

• Monitor Connex application performance and investigate production issues.

• Support migration preparation, execution, validation, and production readiness.

• Execute recurring daily operational controls to ensure accurate and reliable settlement processing.

• Coordinate with application, infrastructure, database, and production support teams.

• Maintain operational documentation, procedures, and troubleshooting guides.

• Ensure all required operational activities are completed accurately and within established timelines.

Preferred Technical Background

Candidates with experience in the following technologies and environments will be highly preferred:

HP NonStop / Tandem Technologies:
HP NonStop, HPE NonStop, Tandem, Guardian, OSS, TACL, TAL, pTAL, SCOBOL, COBOL, Pathway, Enscribe, Enform, SQLCI, FUP, DDL, Spoolcom, Netbatch.

Connex / Payment Processing:
Connex, Connex Professional, BASE24, BASE24-eps, Falcon, Processor Interface (PI), Primary Message Control (PMC), Terminal Handler (TH), Authorization Process (AP), ATM, POS, EFT, Acquiring, Issuing, ISO 8583, Visa, MasterCard, Debit Card, Credit Card, Settlement Processing.

Batch / Automation / Operations:
TACL Scripts, TACL Macros, Obey Files, Batch Processing, Balance Processing, Initial Balance Files, DB Automation, APPRINTs, ELASTIC Loads, Falcon Loads, Cardholder Data Loads, PI Link Queue Monitoring, Production Support, Migration Support, Operational Validation.

Production / Monitoring / Support:
Production Operations, L1/L2/L3 Support, Incident Management, Problem Management, Disaster Recovery, System Monitoring, Performance Monitoring, Release Management, Migration Readiness, Settlement Validation.

Ideal Candidate Profile

• HP NonStop / Tandem Engineer

• Connex Application Support Engineer

• Connex Production Support Engineer

• Tandem Technical Operations Engineer

• HP NonStop Site Reliability Engineer

• Payment Switch Engineer

• Connex Migration Engineer

• Banking / EFT Payment Processing Specialist

Important: This is a specialized HP NonStop / Tandem / Connex operational engineering position, not a generic AWS, Azure, Kubernetes, Docker, or CI/CD DevOps role. Direct experience with Connex, TACL, payment processing, and production migration operations is strongly preferred.